JPH06129440A - Flexible joint and manufacture thereof - Google Patents
Flexible joint and manufacture thereofInfo
- Publication number
- JPH06129440A JPH06129440A JP4275999A JP27599992A JPH06129440A JP H06129440 A JPH06129440 A JP H06129440A JP 4275999 A JP4275999 A JP 4275999A JP 27599992 A JP27599992 A JP 27599992A JP H06129440 A JPH06129440 A JP H06129440A
- Authority
- JP
- Japan
- Prior art keywords
- elastic cord
- elastic
- wound
- flexible joint
- cord
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/78—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members shaped as an elastic disc or flat ring, arranged perpendicular to the axis of the coupling parts, different sets of spots of the disc or ring being attached to each coupling part, e.g. Hardy couplings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/50—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members
- F16D3/60—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts
- F16D3/62—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive with the coupling parts connected by one or more intermediate members comprising pushing or pulling links attached to both parts the links or their attachments being elastic
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に、自動車の動力伝
達系に用いて好適なたわみ継手およびその製造方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible joint suitable for use in a power transmission system of an automobile and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】従来、この種のたわみ継手としては、例
えば、実開昭６３−２４４２７号公報に記載されたもの
が知られている。2. Description of the Related Art Conventionally, as a flexible joint of this type, for example, one disclosed in Japanese Utility Model Laid-Open No. 63-24427 is known.
【０００３】かかるたわみ継手は、駆動軸側に連結され
る第１の筒体と、被駆動軸側に連結される第２の筒体と
の間に、弾性コードが層状に重なるように複数回巻回さ
れており、その弾性コードは一種類であり、また、その
弾性コードは、一定の間隔に保持された第１および第２
の筒体の間において均一の張り具合をもって連続的に巻
回されている。Such flexible joints are provided a plurality of times so that the elastic cords are layered between the first cylinder connected to the drive shaft side and the second cylinder connected to the driven shaft side. The elastic cord is wound, and the elastic cord is of a single type, and the elastic cord includes first and second elastic cords that are held at regular intervals.
Are continuously wound with a uniform tension between the cylindrical bodies.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記従来のた
わみ継手は、弾性コードが均一な張り具合をもって層状
に巻回されているため、必然的に、弾性コードの内側層
の１巻回当たりの長さが外側層のそれよりも短くなり、
それらの１巻回当たりの長さが不均一となる。そのた
め、たわみ継手の使用時に第１および第２の筒体の相互
間に引張力が作用して、それらの間隔が大きくなった場
合には、弾性コードの単位長さ当たりの伸び率が外側層
のものよりも内側層のものの方が大きくなり、その内側
層のものは外側層のものよりも引張力の負担が大きくな
る。したがって、弾性コードの内側層のものは、外側層
のものよりも早期に破断する傾向にあり、弾性コードの
巻回数を増す割には破断強度が向上しないという問題が
あった。However, in the conventional flexible joint described above, since the elastic cord is wound in layers with a uniform tension, it is inevitable that the inner layer of the elastic cord is wound per winding. The length is shorter than that of the outer layer,
The length per one turn is not uniform. Therefore, when a tensile force acts between the first and second cylinders during use of the flexible joint, and the distance between them increases, the elongation rate of the elastic cord per unit length increases. The inner layer is larger than the outer layer, and the inner layer has a larger tensile load than the outer layer. Therefore, the elastic cord inside layer tends to break earlier than the outside cord, and there is a problem in that the breaking strength does not improve in spite of increasing the number of windings of the elastic cord.
【０００５】本発明の目的は、駆動軸側の筒体と被駆動
軸側の筒体との間に層状に複数回巻回される弾性コード
に、その内側層または外側層のものの如何に拘らず、両
筒体間に加わる引張力を均一に負担させて、破断強度を
向上させることができるたわみ継手およびその製造方法
を提供することにある。It is an object of the present invention to regard an elastic cord wound a plurality of times in layers between a tubular body on the side of a drive shaft and a tubular body on the side of a driven shaft, regardless of whether the cord is an inner layer or an outer layer. It is another object of the present invention to provide a flexible joint and a method of manufacturing the same, in which the tensile force applied between the two cylinders is evenly applied to improve the breaking strength.
【０００６】[0006]
【課題を解決するための手段】本発明の第１形態のたわ
み継手は、駆動軸側に連結される第１の筒体の外周部
と、被駆動軸側に連結される第２の筒体の外周部との間
に、弾性コードが層状に重なるように複数回巻回されて
なるたわみ継手において、前記弾性コードは、内側層の
ものが外側層のものよりも弛く巻回されて、内側層のも
のと外側層のもののそれぞれの１巻き当たりの長さが略
等しくされていることを特徴とする。A flexible joint according to a first aspect of the present invention comprises an outer peripheral portion of a first cylinder connected to a drive shaft side and a second cylinder connected to a driven shaft side. In the flexible joint formed by winding the elastic cord a plurality of times so as to overlap the outer peripheral portion of the elastic cord, the elastic cord is wound such that the inner cord is looser than the outer cord. Each of the inner layer and the outer layer has a substantially equal length per one turn.
【０００７】本発明の第２形態のたわみ継手は、駆動軸
側に連結される第１の筒体の外周部と、被駆動軸側に連
結される第２の筒体の外周部との間に、弾性コードが層
状に重なるように複数回巻回されてなるたわみ継手にお
いて、前記弾性コードは、内側層のものが外側層のもの
よりも引張り荷重による伸び率が大きいことを特徴とす
る。The flexible joint according to the second aspect of the present invention is provided between the outer peripheral portion of the first cylindrical body connected to the drive shaft side and the outer peripheral portion of the second cylindrical body connected to the driven shaft side. In the flexible joint formed by winding the elastic cords a plurality of times so as to overlap each other in layers, the elastic cords of the inner layer have a higher elongation rate due to a tensile load than those of the outer layer.
【０００８】本発明の第１形態のたわみ継手の製造方法
は、前記第１形態のたわみ継手の製造方法であって、前
記第１および第２の筒体の外周部の間に弾性コードを巻
回する際に、前記第１および第２の筒体を連続的または
断続的に近接移動させることを特徴とする。A method for manufacturing a flexible joint according to a first aspect of the present invention is the method for manufacturing a flexible joint according to the first aspect, wherein an elastic cord is wound between outer peripheral portions of the first and second cylindrical bodies. When turning, the first and second cylinders are continuously or intermittently moved close to each other.
【０００９】本発明の第２形態のたわみ継手の製造方法
は、前記第２形態のたわみ継手の製造方法であって、前
記第１および第２の筒体の外周部の間に弾性コードを巻
回する際に、まず、引張り荷重による伸び率が比較的大
きな弾性コードを巻回して内側層を形成し、その後、前
記内側層の上に引張り荷重による伸び率が比較的小さな
弾性コードを巻回して外側層を形成することを特徴とす
る。A method for manufacturing a flexible joint according to a second aspect of the present invention is the method for manufacturing a flexible joint according to the second aspect, wherein an elastic cord is wound between outer peripheral portions of the first and second cylindrical bodies. When turning, first, an elastic cord having a relatively large elongation due to a tensile load is wound to form an inner layer, and then an elastic cord having a relatively small elongation due to a tensile load is wound on the inner layer. To form an outer layer.
【００１０】[0010]
【作用】本発明によれば、駆動軸側の筒体と被駆動軸側
の筒体との間に層状に巻回される弾性コードに関し、そ
の内側層のものを外側層のものよりも弛く巻回したり、
その内側層のものを外側層のものよりも引張荷重による
伸び率が大きいものとしたりすることにより、弾性コー
ドに対して、内側層または外側層のものの如何に拘らず
引張力を均一に負担させて、たわみ継手の破断強度を向
上させる。According to the present invention, there is provided an elastic cord wound in layers between a cylinder on the drive shaft side and a cylinder on the driven shaft side. Winding around,
By making the inner layer one having a higher elongation rate due to a tensile load than the outer layer one, the elastic cord is made to bear the tensile force evenly regardless of whether it is the inner layer or the outer layer. Improve the breaking strength of the flexible joint.
【００１１】また、弾性コードの巻回数に比例した強度
を実現して、その巻回数の増加につれて強度の増強率が
小さくなる従来のたわみ継手に比して、たわみ継手の小
型化を可能とする。Further, the flexible joint realizes strength proportional to the number of windings of the elastic cord, and the flexible joint can be downsized as compared with the conventional flexible joint in which the rate of increase in strength decreases as the number of windings increases. .
【００１２】[0012]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】「第１の実施例」図１から図６は、本発明
の第１の実施例を説明するための図である。図１は本実
施例のたわみ継手の平面図であり、同図において１は、
点Ｏを通って同図の表裏方向に延在する軸線を中心とし
て回転駆動される駆動軸（図示せず）側に連結される計
３つの第１の内筒であり、また２は、駆動軸と同軸回転
可能な被駆動軸（図示せず）側に連結される計３つの第
２の内筒である。これら３つずつの第１および第２の内
筒１および２は、点Ｏを中心とする中心角６０°の等間
隔で交互に配置され、そして、互いに隣接する第１およ
び第２の内筒１および２の間に、弾性リンクＬが計６つ
連結されている。[First Embodiment] FIGS. 1 to 6 are views for explaining a first embodiment of the present invention. FIG. 1 is a plan view of the flexible joint of the present embodiment. In FIG.
There are a total of three first inner cylinders connected to a drive shaft (not shown) that is driven to rotate about an axis extending in the front and back directions in the figure through the point O, and 2 is a drive shaft. It is a total of three second inner cylinders that are connected to a driven shaft (not shown) that can rotate coaxially with the shaft. These three first and second inner cylinders 1 and 2 are alternately arranged at equal intervals with a center angle of 60 ° about the point O, and are adjacent to each other. A total of six elastic links L are connected between 1 and 2.
【００１４】弾性リンクＬは、図２および図３に示すよ
うに、対の外筒３，３の間にガラス繊維などの弾性コー
ド４が層状に重なるように複数回巻回されてなる。その
弾性コード４は、内側層のものが外側層のものよりも緩
く弛みをもって巻回されており、それぞれの層における
１巻回当たりの長さが略等しくなっている。なお、図１
においては、計６つの弾性リンクＬの内の２つのものに
おける弾性コード４のみを示し、他の４つものにおける
弾性コード４の図示は省略している。また、本例におけ
る弾性コード４は、その外側層から内側層に向うにした
がって６段階的に緩くなるように巻回されている。図２
においては、その６段階的に巻回の張力が異なる弾性コ
ード４の６つの部位毎に、その張力が大きくなる方の順
つまり内側層から外側層に向う順に４−１，４−２…４
−６の符号を付している。弾性コード４の巻回方法につ
いては後述する。As shown in FIGS. 2 and 3, the elastic link L is formed by winding a plurality of elastic cords 4 such as glass fibers between the pair of outer cylinders 3, 3 so as to overlap each other in layers. The elastic cord 4 is wound more loosely in the inner layer than in the outer layer, and the length per winding in each layer is substantially equal. Note that FIG.
In FIG. 6, only the elastic cords 4 of two of the six elastic links L are shown, and the elastic cords 4 of the other four are omitted. Further, the elastic cord 4 in this example is wound so as to be loosened in six steps from the outer layer toward the inner layer. Figure 2
In the above, in each of the six portions of the elastic cord 4 whose winding tensions are different in six stages, the order in which the tension increases is the order from the inner layer to the outer layer 4-1, 4-2 ... 4
The symbol of -6 is attached. The method of winding the elastic cord 4 will be described later.
【００１５】そして、計６つの弾性リンクＬは、それぞ
れの内側の外筒３，３が互いに隣接する第１および第２
の内筒１および２の外周部に嵌合することによって、図
１に示すように、平面略正六角形を成すように互いに連
結される。さらに、それぞれの弾性リンクＬがゴム等の
弾性体５（図１参照）によって被覆されることによっ
て、たわみ継手が構成されている。The six elastic links L in total have first and second outer tubes 3 and 3 adjacent to each other.
As shown in FIG. 1, the inner cylinders 1 and 2 are connected to each other so as to form a substantially regular hexagonal shape by fitting into the outer peripheral portions of the inner cylinders 1 and 2. Further, each elastic link L is covered with an elastic body 5 such as rubber (see FIG. 1) to form a flexible joint.
【００１６】ここで、本実施例における弾性コード４の
巻回方法について説明する（図４参照）。Now, a method of winding the elastic cord 4 in this embodiment will be described (see FIG. 4).
【００１７】本例では、弾性コード４として番手１３５
のガラス繊維を用いた。そして、まず図４（ａ）に示す
ように、外筒３，３を長さＬ1 （７８．５ｍｍ）の間隔
で保持したまま弾性コード４を１００ターン巻いて、そ
れを前述した内側から１番目の部位４−１とする。その
際、外筒３の外周面に沿ってターンをする弾性コード４
の部位Ｐ（図２中の斜線部位）にエポキシ樹脂を塗布す
る。その後、図４（ｂ）に示すように、外筒３，３を長
さＬ2 （７８．０ｍｍ）の間隔に狭めて保持してから、
弾性コード４をさらに１００ターン巻いて、それを前述
した内側から２番目の部位４−２とする。その際には、
前述した場合と同様に、弾性コード４の部位Ｐにエポキ
シ樹脂を塗布する。以下、同様に、図４（ｃ），
（ｄ），（ｅ）および（ｆ）に示すように、外筒３，３
を長さＬ3 （７７．５ｍｍ），Ｌ4 （７７．０ｍｍ），
Ｌ5 （７６．５ｍｍ）およびＬ6 （７６．０ｍｍ）の間
隔に順次０．５ｍｍづつ狭めて保持し、そして、それら
の保持状態において、弾性コード４を１００ターンずつ
巻くと共に、弾性コード４の部位Ｐにエポキシ樹脂を塗
布して、前述した弾性コード４の内側から３番目，４番
目，５番目および６番目の部位４−３，４−４，４−５
および４−６を成す。In this example, the elastic cord 4 has a number of 135
The glass fiber of was used. Then, as shown in FIG. 4 (a), the elastic cord 4 is wound 100 turns while the outer cylinders 3 are held at the interval of the length L 1 (78.5 mm). The second part is 4-1. At that time, the elastic cord 4 that turns along the outer peripheral surface of the outer cylinder 3
The epoxy resin is applied to the portion P (hatched portion in FIG. 2). After that, as shown in FIG. 4B, the outer cylinders 3, 3 are narrowed and held at intervals of a length L 2 (78.0 mm), and then,
The elastic cord 4 is further wound 100 turns to form the second portion 4-2 from the inner side as described above. In that case,
As in the case described above, the epoxy resin is applied to the portion P of the elastic cord 4. Hereinafter, similarly, FIG.
As shown in (d), (e) and (f), the outer cylinders 3, 3
The length L 3 (77.5 mm), L 4 (77.0 mm),
The distance between L 5 (76.5 mm) and L 6 (76.0 mm) is sequentially narrowed by 0.5 mm and held, and in these holding states, the elastic cord 4 is wound 100 turns at a time and the elastic cord 4 Epoxy resin is applied to the part P, and the third, fourth, fifth and sixth parts 4-3, 4-4, 4-5 from the inside of the elastic cord 4 described above are used.
And 4-6.
【００１８】このように、外筒３，３を断続的に０．５
ｍｍずつ近接移動させながら、それらの間に弾性コード
４を６段階に分けて合計６００ターン重ね巻きする。そ
の後、外筒３，３を最終的なＬ6 （７６．０ｍｍ）の間
隔に保持したまま加熱してエポキシ樹脂を硬化させるこ
とにより、両外筒３，３に弾性コードを固着させて弾性
リンクＬとする。結局、弾性コード４は、内側層のもの
が外側層のものよりも緩く巻回されて、それぞれの部位
４−１〜４−６の１巻回当たりの長さが略等しくなる。
そして、前述したように、この弾性リンクＬを６つ連結
し、さらにそれぞれの弾性リンクＬをゴム等の弾性体５
で被覆することによってたわみ継手が構成される。In this way, the outer cylinders 3, 3 are intermittently 0.5
While being moved closer to each other by mm, the elastic cord 4 is wound between them in six stages in a total of 600 turns. After that, the outer cylinders 3 and 3 are heated with the final spacing of L 6 (76.0 mm) held therebetween to cure the epoxy resin, thereby fixing the elastic cords to the outer cylinders 3 and 3 and elastic linking. Let L. After all, the elastic cord 4 is wound more loosely in the inner layer than in the outer layer, so that the lengths of the respective portions 4-1 to 4-6 per winding are substantially equal.
Then, as described above, six elastic links L are connected, and each elastic link L is further connected to the elastic body 5 such as rubber.
A flexible joint is formed by coating with.
【００１９】しかして、このように構成されたたわみ継
手は、第１の内筒１が駆動軸側に連結され、また第２の
内筒２が被駆動軸側に連結されることにより、使用に供
されて回転トルクを伝達する。その使用時に、弾性リン
クＬの両端に引張力が作用することにより、弾性コード
４は内側層または外側層の如何に拘らず略均等に伸び
て、それぞれの部位４−１〜４−６が略均等に引張力を
分担する。これは、弾性コード４の１巻回当たりの長さ
が内側層から外側層の全範囲に亘って略等しくされてい
るからである。したがって、本例のたわみ継手は、弾性
コード４の内側層のものが引張力を大きく負担する従来
の場合に比して、弾性コード４の巻回数が同じであって
も大きな荷重に耐えることができてトルクの伝達能力が
増強され、また小型化が実現できることにもなる。The flexible joint thus constructed is used by connecting the first inner cylinder 1 to the drive shaft side and the second inner cylinder 2 to the driven shaft side. Is used to transmit rotational torque. When the elastic link 4 is used, a tensile force acts on both ends of the elastic link L, so that the elastic cord 4 extends substantially evenly regardless of whether it is the inner layer or the outer layer, and the respective portions 4-1 to 4-6 are substantially formed. Evenly share the pulling force. This is because the length of the elastic cord 4 per winding is substantially equal over the entire range from the inner layer to the outer layer. Therefore, the flexible joint of this example can withstand a large load even when the elastic cord 4 is wound the same number of times as compared with the conventional case where the inner layer of the elastic cord 4 bears a large tensile force. As a result, the torque transmission capability is enhanced, and the size can be reduced.
【００２０】本実施例における弾性リンクＬを引張試験
機にセットし、その外筒３，３を引張って破断強さを測
定した。その結果を試料Ｎｏ．１の破断強さとして図５
に示す。同図中の試料Ｎｏ．５は、外筒３，３をＬ6
（７６．０ｍｍ）の間隔に保持したまま、本実施例の弾
性リンクＬと同様の番手１３５のガラス繊維の弾性コー
ド４を６００ターン連続して巻回してなる弾性リンクの
対比例である。本実施例における弾性リンクＬ（試料Ｎ
ｏ．１）は、それと弾性コード４の巻回数が同じである
対比例（試料Ｎｏ．５）よりも引張の破断強さが格段に
優れている。The elastic link L in this example was set in a tensile tester, and the outer cylinders 3 were pulled to measure the breaking strength. The results are shown in Sample No. Fig. 5 shows the breaking strength of 1
Shown in. Sample No. in the figure. 5 is the outer cylinder 3, 3 L 6
The elastic link 4 is in contrast to the elastic link formed by continuously winding the glass fiber elastic cord 4 of the same number 135 as the elastic link L of the present embodiment for 600 turns while keeping the interval of (76.0 mm). Elastic link L (Sample N
o. In 1), the tensile breaking strength is significantly superior to that in the comparative example (Sample No. 5) in which the number of windings of the elastic cord 4 is the same.
【００２１】なお、弾性コード４としては、ガラス繊維
の他、種々のものを用いることができ、特に、炭素繊
維，アルミナ繊維およびアルミナ−シリカ繊維などのよ
うな無機繊維、またはパラ形アラミド繊維等のような伸
び率の小さな有機繊維は効果的に用いることができる。
図６中の曲線ＧＦおよびＰＡ６６は、伸び率が小さい番
手１３５のガラス繊維と、伸び率が大きいポリアミド６
６延伸繊維（１２６０デニール）のそれぞれを弾性コー
ドとした場合における巻き数と引張破断強さとの関係を
示す。ここでは、両者の弾性コードのそれぞれをＬ6
（７６．０ｍｍ）の間隔の外筒３，３の間に６００ター
ン巻回し、それらをエポキシ樹脂によって同様に固定し
たものを試料とした。後者の弾性コード（ポリアミド６
６延伸繊維）のものは、図６中のＰＡ６６のように破断
強さが巻数に比例し、一方、前者の弾性コード（ガラス
繊維）のものは、図６中のＧＦのように巻数の増加につ
れて破断強さの増加率が小さくなる。したがって、本発
明では、前者のような伸び率の小さな繊維を弾性コード
として効果的に用いることができる。なお、アラミド繊
維のような有機繊維において、伸び率の小さいパラ形の
ものはガラス繊維に似た挙動を示し、また伸び率の大き
いメタ形はポリアミド６６繊維に似た挙動を示す。The elastic cord 4 may be made of various materials other than glass fiber, particularly, inorganic fiber such as carbon fiber, alumina fiber and alumina-silica fiber, or para-aramid fiber. Organic fibers having a low elongation rate such as can be effectively used.
Curves GF and PA66 in FIG. 6 indicate glass fiber of count 135 having a low elongation rate and polyamide 6 having a high elongation rate.
The relationship between the number of windings and the tensile breaking strength in the case where each of the 6 drawn fibers (1260 denier) is used as an elastic cord is shown. Here, each of the elastic cords of both is L 6
A sample was obtained by winding 600 turns between the outer cylinders 3 and 3 having an interval of (76.0 mm) and fixing them similarly with an epoxy resin. Elastic cord of the latter (polyamide 6
6 stretched fiber) has a breaking strength proportional to the number of turns like PA66 in FIG. 6, while the former elastic cord (glass fiber) has an increased number of turns like GF in FIG. The rate of increase of the breaking strength decreases as the value increases. Therefore, in the present invention, the fiber having a small elongation as in the former case can be effectively used as the elastic cord. Among organic fibers such as aramid fibers, para-shaped fibers having a low elongation rate behave like glass fibers, and meta-shaped fibers having a high elongation rate behave like polyamide 66 fibers.
【００２２】また、本実施例では、弾性コード４の部位
Ｐにエポキシ樹脂を塗布しているが、その弾性コード４
全体にエポキシ樹脂を含浸させて外筒３，３に固定して
もよく、またエポキシ樹脂に代えて、天然ゴム，合成ゴ
ムおよびウレタンゴム等の弾性体によって弾性コード４
を外筒３，３に固定してもよい。Further, in this embodiment, the epoxy resin is applied to the portion P of the elastic cord 4, but the elastic cord 4 is
The whole may be impregnated with an epoxy resin and fixed to the outer cylinders 3 and 3. Alternatively, instead of the epoxy resin, an elastic body such as natural rubber, synthetic rubber or urethane rubber may be used to form the elastic cord 4.
May be fixed to the outer cylinders 3, 3.
【００２３】「第２の実施例」弾性リンクＬにおける弾
性コード（番手１３５のガラス繊維）４の巻回形態を次
のように変更した。まず、外筒３，３を７８．０ｍｍの
間隔に保持して、それらの間に弾性コード４を１００タ
ーン巻回し、次に、外筒３，３の間隔を０．４ｍｍ小さ
くして、それらの間に弾性コード４を１００ターン重ね
て巻回し、以降同様に、外筒３，３の間隔を０．４ｍｍ
小さくする毎に１００ターンずつ重ねて巻回して、計６
００ターン巻回した。最終的に、外筒３，３の間隔は７
６．０ｍｍとなる。このように弾性コード４が巻回され
た弾性リンクＬを試料２（図５参照）として引張の破断
強さを測定した。図５中の試料５の対比例との比較から
も明らかなように、優れた破断強さが確認できた。[Second Embodiment] The winding form of the elastic cord (glass fiber of count 135) 4 in the elastic link L is changed as follows. First, the outer cylinders 3 and 3 are held at a distance of 78.0 mm, the elastic cord 4 is wound 100 turns between them, and then the distance between the outer cylinders 3 and 3 is reduced by 0.4 mm. The elastic cord 4 is wound 100 times in between and the outer cylinders 3 are spaced by 0.4 mm.
Each time it is made smaller, it is wound 100 turns and wound, making a total of 6
It was wound for 00 turns. Finally, the outer cylinders 3, 3 are spaced by 7
It becomes 6.0 mm. In this way, the elastic link L wound with the elastic cord 4 was used as the sample 2 (see FIG. 5) to measure the tensile breaking strength. As is clear from the comparison with the comparative example of Sample 5 in FIG. 5, excellent breaking strength was confirmed.
【００２４】「第３の実施例」さらに、弾性リンクＬに
おける弾性コード（番手１３５のガラス繊維）４の巻回
形態を次のように変更した。まず、外筒３，３を７６．
６ｍｍの間隔にして弾性コード４を２００ターン巻回
し、その後、外筒３，３の間隔を０．３ｍｍ減少させて
弾性コード４を２００ターン重ねて巻回し、さらに、外
筒３，３の間隔を０．３ｍｍ減少させて弾性コード４を
２００ターン重ねて巻回した。結局、最終的な外筒３，
３の間隔は７６．０ｍｍとなり、弾性コード４は合計６
００ターン巻回されることになる。このように弾性コー
ド４が巻回された弾性リンクＬを試料３（図５参照）と
して引張の破断強さを測定した。前述した試料１，２と
同様に、優れた破断強さが確認できた。[Third Embodiment] Further, the winding form of the elastic cord (glass fiber of count 135) 4 in the elastic link L is changed as follows. First, set the outer cylinders 3 and 3 to 76.
The elastic cord 4 is wound 200 turns with a space of 6 mm, then the distance between the outer cylinders 3 is reduced by 0.3 mm, the elastic cord 4 is wound 200 turns, and the space between the outer cylinders 3 is further reduced. Was reduced by 0.3 mm and the elastic cord 4 was wound 200 turns. After all, the final outer cylinder 3,
3 spacing is 76.0 mm, and elastic cord 4 has a total of 6
It will be wound for 00 turns. In this way, the elastic link L wound with the elastic cord 4 was used as the sample 3 (see FIG. 5) to measure the tensile breaking strength. Similar to Samples 1 and 2 described above, excellent breaking strength was confirmed.
【００２５】「第４の実施例」さらに、弾性コード（番
手１３５のガラス繊維）４の巻回形態を次のように変更
した。まず、外筒３，３を７７．４ｍｍの間隔にして弾
性コード４を３００ターン巻回し、次に、それらの間隔
を７６．０ｍｍに減少させて３００ターン重ねて巻回し
た。このように弾性コード４が巻回された弾性リンクＬ
を試料４（図５参照）として破断強さを測定した。前述
した実施例と同様に、優れた破断強さが確認できた。[Fourth Embodiment] Furthermore, the winding form of the elastic cord (glass fiber of count 135) 4 was changed as follows. First, the outer tubes 3 and 3 were wound at a distance of 77.4 mm, and the elastic cord 4 was wound for 300 turns, and then the distance between them was reduced to 76.0 mm and wound for 300 turns. The elastic link L in which the elastic cord 4 is wound in this way
Sample 4 (see FIG. 5) was measured for breaking strength. Similar to the above-mentioned examples, excellent breaking strength was confirmed.
【００２６】「第５の実施例」図７から図１０は、第５
の実施例を説明するための図であり、前述した第１の実
施例と同様の部分には同一符号を付して説明を省略す
る。[Fifth Embodiment] FIGS. 7 to 10 show a fifth embodiment.
Is a diagram for explaining the embodiment of the above, the same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.
【００２７】本実施例における弾性リンクＬは、外筒
３，３の間に、引張荷重による伸び率が異なる２種類の
第１および第２の弾性コード４１，４２を２層に巻回し
た構成になっている。第１の弾性コード４１は、伸び率
が比較的大きい１０００デニールのパラ形アラミド繊維
であり、外筒３，３の間に６８ターン巻回されて内側層
を成している。一方、第２の弾性コード４２は、伸び率
が比較的小さい番手１３５のガラス繊維であり、第１の
弾性コード４１の上に重ねて４００ターン巻回されて外
側層を成している。そして、このような構成の弾性リン
クＬは、第１および第２の内筒１および２によって平面
六角形状を成すように６つ連結され、さらに、それらの
弾性リンクが弾性体５によって被覆されることによっ
て、たわみ継手が構成されている。The elastic link L in this embodiment has a structure in which two types of first and second elastic cords 41 and 42 having different elongations due to tensile loads are wound in two layers between the outer cylinders 3 and 3. It has become. The first elastic cord 41 is a para-aramid fiber having a relatively high elongation of 1000 denier and is wound 68 turns between the outer cylinders 3 to form an inner layer. On the other hand, the second elastic cord 42 is a glass fiber of the count 135 having a relatively small elongation, and is wound on the first elastic cord 41 for 400 turns to form an outer layer. Then, six elastic links L having such a configuration are connected by the first and second inner cylinders 1 and 2 so as to form a planar hexagonal shape, and further, these elastic links are covered by the elastic body 5. The flexible joint is thereby configured.
【００２８】ところで、弾性リンクＬの製造に際して
は、外筒３，３を所定の間隔に保持したまま、まず、第
１の弾性コード４１を６８ターン巻回する。その時、外
筒３の外周面に沿ってターンをする弾性コード４１の部
位Ｐ（図８参照）にエポキシ樹脂を塗布する。次に、第
２の弾性コード４２を４００ターン重ねて巻回する。そ
の時も弾性コード４２の部位Ｐにエポキシ樹脂を塗布す
る。次に、治具によって外筒３，３の間隔を保持したま
ま加熱し、そしてエポキシ樹脂を硬化させることによ
り、両外筒３，３に弾性コード４１，４２を固着させて
弾性リンクＬとする。When manufacturing the elastic link L, the first elastic cord 41 is first wound 68 turns while the outer cylinders 3 are held at a predetermined interval. At that time, an epoxy resin is applied to a portion P (see FIG. 8) of the elastic cord 41 that makes a turn along the outer peripheral surface of the outer cylinder 3. Next, the second elastic cord 42 is wound 400 times in an overlapping manner. Also at that time, the epoxy resin is applied to the portion P of the elastic cord 42. Next, the outer cylinders 3 and 3 are heated with a jig while maintaining the distance between them, and the epoxy resin is cured to fix the elastic cords 41 and 42 to the outer cylinders 3 and 3 to form the elastic link L. .
【００２９】しかして、本実施例のたわみ継手は、その
使用時に、弾性リンクＬの両端に引張力が作用すること
により、第１および第２の弾性コード４１および４２
は、その引張力を略等しく分担する。それは、内側層を
成す第１の弾性コード４１の１巻回当たりの長さが短い
分、その伸び率が大きく、一方、外側層を成す第２の弾
性コード４２の１巻回当たりの長さが長い分、その伸び
率が小さいためである。したがって、弾性コード４１お
よび４２の巻回数に応じて弾性リンクＬの耐引張り力の
限界値が上がり、たわみ継手のトルクの伝達能力が増強
されることになる。Therefore, in the flexible joint of this embodiment, when the elastic joint L is used, a tensile force acts on both ends of the flexible joint, so that the first and second elastic cords 41 and 42.
Share their pulling forces approximately equally. This is because the length of the first elastic cord 41 forming the inner layer per winding is short, so that the elongation rate is large, while the length per winding of the second elastic cord 42 forming the outer layer is large. This is because the longer the elongation, the smaller the elongation. Therefore, the limit value of the tensile strength of the elastic link L increases according to the number of windings of the elastic cords 41 and 42, and the torque transmission capability of the flexible joint is enhanced.
【００３０】本実施例における弾性リンクＬを引張試験
機にセットし、その外筒３，３を引張って破断強さを測
定した。その結果を試料Ｎｏ．１の破断強さとして図１
０に示す。同図中の試料Ｎｏ．４は、外筒３，３の間
に、第１および第２の弾性コード４１および４２に代え
て番手１３５のガラス繊維を６００ターン巻回し、そし
て、本実施例の弾性リンクＬの場合と同様に、そのガラ
ス繊維をエポキシ樹脂によって外筒３，３に固定してな
る弾性リンクの対比例である。本実施例の弾性リンク
（試料Ｎｏ．１）は、只一種の弾性コードが巻回された
対比例（試料Ｎｏ．４）よりも大幅に強度が向上した。
また、その対比例の弾性リンクは、前述した実施例の図
６中の曲線ＧＦのように、巻数の増加につれて破断強さ
の増加率が小さくなる。一方、本実施例の弾性リンクＬ
では、その破断強さの増加率の減少が抑えられることに
なる。The elastic link L in this example was set in a tensile tester, and the outer cylinders 3 were pulled to measure the breaking strength. The results are shown in Sample No. Fig. 1 shows the breaking strength of 1
It shows in 0. Sample No. in the figure. No. 4 is made by winding 600 turns of glass fiber of count 135 in place of the first and second elastic cords 41 and 42 between the outer cylinders 3 and 3, and the same as in the case of the elastic link L of this embodiment. In contrast, the elastic links formed by fixing the glass fibers to the outer cylinders 3, 3 with an epoxy resin are in proportion to each other. The elastic link (Sample No. 1) of the present example has significantly improved strength as compared with the comparative example (Sample No. 4) in which a kind of elastic cord is wound.
Further, in the elastic link of the proportional relationship, the increase rate of the breaking strength decreases as the number of turns increases, as indicated by the curve GF in FIG. 6 of the above-described embodiment. On the other hand, the elastic link L of this embodiment
Then, the decrease in the increase rate of the breaking strength can be suppressed.
【００３１】また、内側層を成す伸び率の大きな弾性コ
ード４１が高価であったり、熱収縮性が大きくて耐熱性
に劣る場合には、外側層を成す伸び率の小さな弾性コー
ド４２を、その強度が巻回数に略比例する特性領域内に
おいてできるだけ多く巻回することによって、価格的に
も性能的にも有利となる。なお、内筒３，３の間に、伸
び率が異なる３種以上の弾性コードを巻回してもよい。
勿論、その場合には、内側層よりも外側層寄りに位置す
る弾性コードの伸び率を小さくする。When the elastic cord 41 forming the inner layer and having a high elongation is expensive or when the heat shrinkage is large and the heat resistance is poor, the elastic cord 42 forming the outer layer and having a small elongation is used. By winding as much as possible in the characteristic region where the strength is substantially proportional to the number of windings, it becomes advantageous in terms of price and performance. It should be noted that three or more types of elastic cords having different elongation rates may be wound between the inner cylinders 3 and 3.
Of course, in that case, the elongation rate of the elastic cord located closer to the outer layer than the inner layer is reduced.
【００３２】「第６の実施例」前述した第５の実施例と
同様の方法により、第１の弾性コード４１として１００
０デニールのメタ形アラミド繊維を８０ターン巻回し、
その外側の第２の弾性コードとして番手１３５のガラス
繊維を４００ターン重ねて巻回した。このようにして構
成した弾性リンクを試料Ｎｏ．２（図１０参照）として
引張の破断強さを測定した。図１０中の試料Ｎｏ．４の
対比例との比較からも明らかなように、優れた破断強さ
が確認できた。[Sixth Embodiment] As the first elastic cord 41, 100 is obtained by the same method as in the fifth embodiment.
Wound 0 denier meta-aramid fiber for 80 turns,
As the second elastic cord on the outer side of the outermost cord, glass fiber having a count of 135 was wound in 400 turns. The elastic link constructed in this manner was used as Sample No. The tensile strength at break was measured as 2 (see FIG. 10). The sample No. in FIG. As is clear from the comparison with Comparative Example 4, excellent breaking strength was confirmed.
【００３３】「第７の実施例」前述した第５の実施例と
同様の方法により、第１の弾性コード４１として１２６
０デニールのポリアミド６６延伸繊維を１００ターン巻
回し、その外側の第２の弾性コード４２として番手１３
５のガラス繊維を４００ターン重ねて巻回した。このよ
うにして構成した弾性リンクを試料Ｎｏ．３（図１０参
照）として引張の破断強さを測定した。図１０から明ら
かなように優れた破断強さが確認できた。[Seventh Embodiment] 126 as the first elastic cord 41 by the same method as the fifth embodiment described above.
A 0 denier polyamide 66 stretched fiber is wound 100 turns, and the second elastic cord 42 on the outside is wound with a count 13
The glass fiber of No. 5 was wound in 400 turns. The elastic link constructed in this manner was used as Sample No. The tensile strength at break was measured as 3 (see FIG. 10). As is clear from FIG. 10, excellent break strength was confirmed.
【００３４】[0034]
【発明の効果】以上説明したように、本発明によれば、
駆動軸側の筒体と被駆動軸側の筒体との間に層状の巻回
される弾性コードに関し、その内側層のものを外側層の
ものよりも弛く巻回したり、その内側層のものを外側層
のものよりも引張荷重による伸び率が大きいものとした
りするから、弾性コードに対して、内側層または外側層
のものの如何に拘らず引張力を均一に負担させて、たわ
み継手の破断強度を向上させることができる。As described above, according to the present invention,
Regarding the elastic cord wound in layers between the drive shaft side tubular body and the driven shaft side tubular body, the inner layer of the elastic cord may be wound more loosely than the outer layer or the inner layer of the inner layer may be wound. Since the elongation rate of the elastic joint due to the tensile load is larger than that of the outer layer, the elastic cord is made to bear the tensile force irrespective of whether it is of the inner layer or the outer layer, and The breaking strength can be improved.
【００３５】また、弾性コードの巻回数に比例した強度
を実現することができ、その結果、その巻回数の増加に
つれて強度の増強率が小さくなる従来のたわみ継手に比
して、たわみ継手の小型化を図ることができる。Further, it is possible to realize strength proportional to the number of windings of the elastic cord, and as a result, the size of the flexible joint is smaller than that of the conventional flexible joint in which the rate of increase in strength decreases as the number of windings increases. Can be realized.
【図１】本発明の一実施例のたわみ継手の平面図であ
る。FIG. 1 is a plan view of a flexible joint according to an embodiment of the present invention.
【図２】図１に示す弾性リンクの平面図である。FIG. 2 is a plan view of the elastic link shown in FIG.
【図３】図２のＩＩＩ−ＩＩＩ線に沿う断面図である。3 is a cross-sectional view taken along the line III-III in FIG.
【図４】（ａ），（ｂ），（ｃ），（ｄ），（ｅ），
（ｆ）は、図１に示す弾性リンクの製造過程を説明する
ための断面図である。4 (a), (b), (c), (d), (e),
(F) is sectional drawing for demonstrating the manufacturing process of the elastic link shown in FIG.
【図５】本発明の第１，第２，第３および第４実施例の
たわみ継手と従来のたわみ継手との破断強さの比較説明
図である。FIG. 5 is a comparative explanatory diagram of breaking strength between the flexible joints of the first, second, third and fourth embodiments of the present invention and the conventional flexible joints.
【図６】異なる弾性コードが巻回されてなる２種の弾性
リンクの特性を説明するための図である。FIG. 6 is a diagram for explaining characteristics of two types of elastic links in which different elastic cords are wound.
【図７】本発明の第５の実施例のたわみ継手の平面図で
ある。FIG. 7 is a plan view of a flexible joint according to a fifth embodiment of the present invention.
【図８】図７に示す弾性リンクの平面図である。8 is a plan view of the elastic link shown in FIG. 7. FIG.
【図９】図８のＩＸ−ＩＸ線に沿う断面図である。9 is a sectional view taken along line IX-IX in FIG.
【図１０】本発明の第５，第６および第７の実施例のた
わみ継手と従来のたわみ継手との破断強さの比較説明図
である。FIG. 10 is a comparative explanatory diagram of breaking strength between the flexible joints of the fifth, sixth and seventh embodiments of the present invention and the conventional flexible joints.
１ 第１の内筒 ２ 第２の内筒 ３ 外筒 ４ 弾性コード ５ 弾性体 ４１ 第１の弾性コード ４２ 第２の弾性コード Ｌ 弾性リンク 1 1st inner cylinder 2 2nd inner cylinder 3 outer cylinder 4 elastic cord 5 elastic body 41 1st elastic cord 42 2nd elastic cord L elastic link
Claims (4)
部と、被駆動軸側に連結される第２の筒体の外周部との
間に、弾性コードが層状に重なるように複数回巻回され
てなるたわみ継手において、 前記弾性コードは、内側層のものが外側層のものよりも
弛く巻回されて、内側層のものと外側層のもののそれぞ
れの１巻き当たりの長さが略等しくされていることを特
徴とするたわみ継手。1. An elastic cord is layered so as to overlap between an outer peripheral portion of a first cylindrical body connected to a drive shaft side and an outer peripheral portion of a second cylindrical body connected to a driven shaft side. In the flexible joint formed by winding the inner cord of the inner layer more loosely than that of the outer layer, the elastic cord is wound around each of the inner layer and the outer layer in a flexible joint. A flexible joint characterized by having substantially equal lengths.
部と、被駆動軸側に連結される第２の筒体の外周部との
間に、弾性コードが層状に重なるように複数回巻回され
てなるたわみ継手において、 前記弾性コードは、内側層のものが外側層のものよりも
引張り荷重による伸び率が大きいことを特徴とするたわ
み継手。2. The elastic cord is layered so as to overlap between the outer peripheral portion of the first cylindrical body connected to the drive shaft side and the outer peripheral portion of the second cylindrical body connected to the driven shaft side. The flexible joint according to claim 1, wherein the elastic cord has a larger elongation rate due to a tensile load than that of the outer layer of the elastic cord.
であって、 前記第１および第２の筒体の外周部の間に弾性コードを
巻回する際に、前記第１および第２の筒体を連続的また
は断続的に近接移動させることを特徴とするたわみ継手
の製造方法。3. The method for manufacturing a flexible joint according to claim 1, wherein when the elastic cord is wound between the outer peripheral portions of the first and second cylindrical bodies, the first and second flexible cords are wound. A method for manufacturing a flexible joint, characterized in that the cylindrical body is continuously or intermittently moved closer to each other.
であって、 前記第１および第２の筒体の外周部の間に弾性コードを
巻回する際に、まず、引張り荷重による伸び率が比較的
大きな弾性コードを巻回して内側層を形成し、その後、
前記内側層の上に引張り荷重による伸び率が比較的小さ
な弾性コードを巻回して外側層を形成することを特徴と
するたわみ継手の製造方法。4. The method for manufacturing a flexible joint according to claim 2, wherein when the elastic cord is wound between the outer peripheral portions of the first and second cylindrical bodies, first, elongation due to a tensile load is applied. A relatively large elastic cord is wound to form the inner layer, then
A method for manufacturing a flexible joint, wherein an outer layer is formed by winding an elastic cord having a relatively small elongation rate due to a tensile load on the inner layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4275999A JPH06129440A (en) | 1992-10-14 | 1992-10-14 | Flexible joint and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4275999A JPH06129440A (en) | 1992-10-14 | 1992-10-14 | Flexible joint and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06129440A true JPH06129440A (en) | 1994-05-10 |
Family
ID=17563367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4275999A Pending JPH06129440A (en) | 1992-10-14 | 1992-10-14 | Flexible joint and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06129440A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2623812A3 (en) * | 2012-02-02 | 2017-06-21 | ZF Friedrichshafen AG | Tab for a torsion coupling |
| JP2020190325A (en) * | 2019-05-23 | 2020-11-26 | トヨタ自動車株式会社 | Flexible coupling |
-
1992
- 1992-10-14 JP JP4275999A patent/JPH06129440A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2623812A3 (en) * | 2012-02-02 | 2017-06-21 | ZF Friedrichshafen AG | Tab for a torsion coupling |
| JP2020190325A (en) * | 2019-05-23 | 2020-11-26 | トヨタ自動車株式会社 | Flexible coupling |
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